Turbulences have been reduced by 90%

Flying with any light aircraft using real weather is impossible with this wind update. As soon as you have light wind you get sick with so much movements. This must be fixed asap.

Cheers

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I think the problem is that Asobo/MS seems to have lost credibility that they know how to implement the weather. So, instead of running a transparent development with a team of experts, they fell into the trap where a million users feel entitled to demand changes in the fundamental components of a flight simulator. You’re right, Asobo/MS should put the foot down and say ā€œthat’s how it’s going to beā€ but I wonder if they have any confidence left, and are just afraid of upsetting the community.

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The gusts should not affect the ground speed much, because a flying object has inertia and a few seconds of increased drag by say 5 knots more headwind and the associated deceleration is too little to cause a significant effect on the speed in the reference coordinate system.

Yes, the plane has inertia until a new force changes the inertia and an increase in winds is a new force especially if it is crosswinds. It should be felt much more in lower speed and in planes with less mass and wind of 5kts gusting 15kts affect smaller planes more in the sim. :slight_smile:

Besides it wasn’t the gusts i was talking about there. It was that in the cessna 172 the indicated airspeed you see in the instruments show less windspeeds thant it is. But i have read that a pitot tube is not always 100% accurate. But at groundlevel it should be the most accurate.

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Yes, and we could be more accurate in the terminology.

A new force will cause acceleration (positive or negative) of the mass, in the direction of the force:

a=F/m

What is the magnitude of the force difference dF that a wind gust adds to the airplane (for example C172)?

dF=0.5 * airDensity * surfaceArea * dragCoefficient * (velocityWithGust^2-velocity^2).

Assuming airDensity=1 kg/m^3, surfaceArea=16 m^2 (wing), dragCoefficient=0.05 (5 degrees AoA), velocity=40 m/s, velocityWithGust=43 m/s (about 6 kt gust and 80 kt speed), we get dF=100N.
The new force of 100N causes 0.1 m/s (0.2 kt/s) acceleration of a mass of 1000 kg (Cessna 172).

So, it takes 5 seconds of the 6 kt gust to change the ground speed by 1 kt.

P.S. I’ve checked the assumptions above and with them, the idling C172 at 80kt decelerates with 1.3 kt/s, which I think is reasonable.

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What if the calculations of turbulence in the sim is on par with reality, but the problem is that it can’t be rendered that way on a 2D flat screen?

Because IRL you feel things with your butt in a 3D environment, the feeling is then more acute, leading to a better anticipation (even though I can tell you that you can still be highly surprised by turbulence IRL).

So maybe there needs to be a hard coded adjustment since we are on a 2D screen.

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I like it that some are starting to show DATA of what they are talking about.
Can Add a whole lot of credibility to whatever they are saying :+1:

I’ve learned from you actually :wink: Really good to actually see things that is invisible in the sim.

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No, it is not ā€˜impossible’. I’ve done it loads of times.

It might be impossible to fly in weather conditions that no-one in the real world would fly one in though? Which is how it should be.

Just stop trying to fly light aircraft in completely unsuitable weather. People are taking about inertia like a Cessna is an A380. A cessna can easily be moved around by hand, it really doesn’t take much wind at all to really get these things shaking. Could people please stop imagining a cessna should react like an airliner, there seems to be a strange idea here about wind being some insignificant meaningless force. The power of wind is immense, it only takes 30+ knots with a bit of crosswind and airliners are having a tough day.

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Yes all very impressive but anyone who’s flown one knows there is no way a cessna is taking 5 seconds to lose a single knot in those conditions. Remember also that turbulence isn’t changes in ground speed, it is changes in life being created by the change in wind speed, and that is immediate.

Why do people not seem to believe that wind have absolutely huge effects on planes, even at fairly low speeds? Wind is something pilots are thinking about every single flight. That’s how it is.

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The thing that is wrong in my opinion is that if METAR reports average winds 15kts and gusts 30KTS. The wind in the sim fluctuate between 15kts and 30kts that makes us have an average wind between 15KTS and 30KTS. That means we have an higher average wind in the sim than it is reported.

To me if 15KTS gusting 30KTS the wind should fluctuate between around 7KTS and 30KTS. That would make an average wind of around 15KTS.

If 3KTS is reported the wind should maybe fluctuate between 0-6KTS to have an average of 3KTS as reported. Well, the gusts we have now is much better than the constant winds we had pre su 10.

I think most of the complains would go away if they implemented a horizon lock in camera settings. That would make 2d camera works more like how our heads and eyes behaves. That way we would see the aircraft be affected by the turbulence but not the camera it will try to stay in level with horizon. Then we need a feature to get the aircraft stable while changing instruments.

horizon lock on/off toggle key for example.

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Well maybe you are confusing air speed and ground speed. Or maybe a different physics applies to anyone who’s flown.

But what i meant by my post was that the ground windspeed and indicated airspeed should be the same in head wind if no engine input is made while on ground. Feels like you are talking about the ground speed of the plane?

Well, it seems the winds actually has correct forces in it in you calculations right.

Making the reported wind speed the median would bring it closer to reality in some situations and bring it further from reality in others. For instance, let’s say you take 20 readings:9 of them are 14 knots, 10 are 15 knots and 1 is 30 knots, then MSFS current behavior would be closer to reality because the average would be 15 (rounded) and the minimum would be 14. Unfortunately, there’s no way to know the minimum from just the average. This is another example of METAR not being cut-out for the job.

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Custom weather winds set to 10KTS. Is it the CFD that causes us to fly in two different windspeeds in C172? Feels like CFD winds is 10KTS too low.

Savage cub indicate same airspeed as ambient wind.

Cessna you can see the drop in indicated airspeed to 0 after change to cessna 172.

Increased winds to 20KTS

I can’t understand this LOL.

So 8-knot winds with a broken ceiling of light cumulus clouds on a non-convective day is ā€œcompletely unsuitableā€?

I agree with you on the fact that people will fly weather in the sim that they would never fly in real life, but the weather I’m talking about certainly is not the issue. At least it very well shouldn’t be. Yesterday was a lovely day to fly where I flew, and the love weather showed such in the sim.

Something is amiss.

Could it be that the height of the pitot tube above ground (say 1m in your example) is different than the height at which the ambient wind speed is defined? That would explain the difference at 20 kts ambient. But of course not the 0 indicated at 10 ambient. This is perhaps something hard-coded to inprove ground handling at typical wind speeds? Don’t know.

I don’t really know either. I think it’s an issue with c172 or the CFD. Is there any other default plane with CFD? I tested pmdg 737 and it had same indicated airspeed as the ambient wind speed.

Well, this is an airplane issue, has nothing to do with turbulence.

I hope they fix the camera and do not limit or change turbulence for everyone. Maybe also add a turbulence slider or somthing if that is possible. I can remove gusts from custom weather as it is now already. Thermals is hardcoded in the weather system though. That we need to set conditions to have less turbulence as it is now. Maybe make the sun generate less heat on ground in custom weather.

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I don’t think that would be right, as the steady speed should be 15 knots, so with gusts the average will be higher than that. I’m not sure why you would reduce it to 7 knots which is lower than the steady speed.

Perhaps we are misunderstanding each other or I’m not being clear, as we are all having input from different angles. When I flew yesterday, the wind at the airport I landed at was steady 8 knots. It was 080 degrees and the runway was 10. So the wind really should not have any drastic effect on performance.

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